Madam Rosmerta

"Do you know, I still have
trouble believing it. Of all the people to go over to
the Dark Side, Sirius Black was the last I'd have thought... I mean,
I remember him when he was a boy at Hogwarts. If you'd told me then
what he was going to become, I'd have said you'd had too much mead."
-- Madam Rosmerta (PA10)

She has been described as "a curvy sort of woman" (PA10)
and "pretty" (PA10, GF19). Ron gets
a bit red in the face when he gets near her (PA10), a fact which Hermione is only too happy to point out (HBP12).